First make vissible all hidden folders and files.Open your HDDCheck if there is a folder named autorun.infCheck if there is a file named autorun.infDelete both of them.Then create a new folder with name autorun.inf and leave it empty.

In case you don't like to see the folder make these few steps.

To super hidde this folder open a command prompt.Click Start and in search type cmd.

Then go to your HDD root.For example we assuming that the drive letter of the disk is E.You must type.E:\E:\attrib e:\autorun.inf +s +h